How to paint over exterior mildew
You will need:
• Zinsser Mould Killer
• Zinsser Universal Cleaner & Degreaser
• B-I-N® Primer Sealer
Steps
1. Surface preparation
The first step when painting over mould is ensuring all surfaces are clean, dry and free from anything that may cause interference with the adhesion of the materials to be applied. Remove loose material by
scraping or brushing with a stiff bristled brush to a smooth edge. Feather sound edges with a fine grade abrasive paper. Remove all visible signs of organic growth and treat the areas with Zinsser Mould Killer according to the manufacturer’s instructions. Allow to dry.
In areas with remaining sound paint clean down with Zinsser Universal Cleaner & Degreaser to remove any contaminants. Rinse thoroughly with clean water to remove all residues. Allow to dry. Fill any cracks and small surface defects with a suitable filler as appropriate in accordance with the manufacturer’s instructions. Allow to dry. Rub down with a fine grade abrasive paper.
Remove all dust.
2. Priming
Prime all stained, bare and filled areas with one coat of Cover Stain® Primer Sealer in accordance with the manufacturer’s instructions. Allow to dry for a minimum of 2 hours drying time (in normal drying conditions.)
3. Decoration
Decorate with two full coats of AllCoat® Exterior Satin or Gloss in accordance with the manufacturer’s instructions. Allow a minimum drying time of one hour between coats
